Find out the ‘line’ (row) number of the cursor in a textarea
You would want to use selectionStart to do this. <textarea onkeyup=”getLineNumber(this, document.getElementById(‘lineNo’));” onmouseup=”this.onkeyup();”></textarea> <div id=”lineNo”></div> <script> function getLineNumber(textarea, indicator) { indicator.innerHTML = textarea.value.substr(0, textarea.selectionStart).split(“\n”).length; } </script> This works when you change the cursor position using the mouse as well.